SHINDAIWA OWNER’S/
OPERATOR'S MANUAL
PB2500 PowerBroom娃
WARNING!
Minimize the risk of
injury to yourself
and others! Read
this manual and
familiarize yourself
with the contents.
Always wear eye
and hearing
protection when
operating this unit.
Part Number 80732 Rev. 4/03
䊛
2
ENGLISH
Throughout this manual are special
attention statements.
WARNING!
A statement preceded by the triangular
attention symbol and the word “WARN-
ING” contains information that should
be acted upon to prevent serious bodily
injury.
CAUTION!
A statement preceded by the word
“CAUTION” contains information that
should be acted upon to prevent
mechanical damage.
IMPORTANT!
A statement preceded by the word
“IMPORTANT” is one that possesses
special significance.
NOTE:
A statement preceded by the word
“NOTE” contains information that is
handy to know and may make your job
easier.
Attention Statements
IMPORTANT!
The operational procedures described in
this manual are intended to help you get
the most from this unit as well as to
protect you and others from harm.
These procedures are guidelines for
safe operation under most conditions,
and are not intended to replace any
safety rules and/or laws that may be in
force in your area. If you have questions
regarding your Shindaiwa power tool, or
if you do not understand something in
this manual, your Shindaiwa dealer will
be glad to assist you. You may also
contact Shindaiwa Inc. at the address
printed on the back of this manual.
Introduction
PAGE
Shindaiwa 2500-series hand held
power equipment has been designed and
built to deliver superior performance and
reliability without compromise to quality,
comfort, safety or durability.
Shindaiwa’s high-performance engines
represent the leading edge of all position
4-cycle engine technology, delivering
exceptionally high power with remark-
ably low displacement and weight. As an
owner/operator, you’ll soon discover for
yourself why Shindaiwa is simply in a
class by itself!
IMPORTANT!
The information contained in this
owner's/operator's manual describes
units available at the time of publication.
Shindaiwa Inc. reserves the right to
make changes to products without prior
notice, and without obligation to make
alterations to units previously manufac-
tured.
Attention Statements................................ 2
Safety Information .................................... 3
Checking Unit Condition......................... 3
Safety Labels ............................................. 5
Unit Description ....................................... 6
Specifications ............................................ 6
Assembly ................................................... 7
Engine Fuel ............................................. 10
Starting the Engine ................................ 11
Stopping the Engine............................... 11
Adjusting Engine Idle ............................ 12
Using the PowerBroom ......................... 12
Maintenance ........................................... 13
Long Term Storage ................................ 16
Accessories ............................................. 16
Troubleshooting Guide ......................... 17
Emission System Warranty ................... 19
WARNING!
The engine exhaust from this unit
contains chemicals known to the
State of California to cause cancer,
birth defects or other reproductive
harm.
Contents
Read and follow this
operators manual.
Failure to do so could
result in serious injury.
Do not operate this tool
if you are tired, ill or
under the influence of
alcohol, drugs, or
medication.
Beware of thrown
objects. Keep bystanders
at least 50 feet (15 m)
away during operation.
Wear eye and hearing
protection at all times
during the operation
of this unit.
3
ENGLISH
Work Safely
PowerBrooms operate at very high speeds
and can do serious damage or injury if they
are misused or abused. Never allow a
person without training or instruction to
operate this unit!
WARNING!
Use Good Judgment
NEVER run the engine when trans-
porting the unit.
NEVER run the engine indoors! Make
sure there is always good ventilation.
Fumes from engine exhaust can cause
serious injury or death.
ALWAYS use the proper tool for the
job.
ALWAYS stop the unit immediately if
it suddenly begins to vibrate or shake.
Inspect for broken, missing or improp-
erly installed parts or attachments.
NEVER operate this unit on elevated
surfaces or roofs.
ALWAYS keep the unit as clean as
practical. Keep it free of loose vegeta-
tion, mud, etc.
ALWAYS hold the unit firmly with
both hands when sweeping, and
maintain control at all times.
ALWAYS keep the handles clean.
ALWAYS disconnect the spark plug
wire before performing any
maintenance work.
Stay Alert
You must be physically and mentally fit to
operate this unit safely.
General Safety Instructions
WARNING!
Never make unauthorized attachment
installations.
WARNING!
Never operate power equipment of
any kind if you are tired or if you are
under the influence of alcohol, drugs,
medication or any other substance
that could affect your ability or
judgement.
WARNING!
Minimize the Risk of Fire
NEVER smoke or light fires near the
unit.
ALWAYS stop the engine and allow it
to cool before refueling. Avoid over-
filling and wipe off any fuel that may
have spilled.
ALWAYS inspect the unit for fuel
leaks before each use. During each
refill, check that no fuel leaks from
around the fuel cap and/or fuel tank. If
fuel leaks are evident, stop using the
unit immediately. Fuel leaks must be
repaired before using the unit.
ALWAYS move the unit to a place well
away from a fuel storage area or other
readily flammable materials before
starting the engine.
NEVER place flammable material
close to the engine muffler.
NEVER run the engine without the
spark arrester screen in place.
Checking Unit Condition
NEVER operate the unit with the
protective devices (ignition switch, etc.)
removed!
ALWAYS use authorized Shindaiwa parts
and accessories with your Shindaiwa
PowerBroom. Do not make modifications
to this unit without the written approval of
Shindaiwa, Inc.
ALWAYS make sure the sweeper drums
are properly installed before operation.
NEVER use a cracked or warped
PowerBroom drum or axle: replace it with
a servicable one.
ALWAYS stop the engine immediately
and check for damage if you strike a
foreign object or if the unit becomes
tangled. Do not operate with broken or
damaged equipment.
NEVER allow the engine to run at high
RPM without a load. Doing so could
damage the engine.
NEVER operate a unit with worn or
damaged fasteners or attachments.
4
ENGLISH
PB01
The Properly Equipped Operator
Always wear respiratory
protection to avoid
breathing airborne debris.
Always operate with
both hands firmly
gripping the unit.
Wear close-fitting clothing
to protect legs and arms.
Gloves offer added
protection and are
strongly recommended.
Do not wear clothing or
jewelry that could get
caught in machinery
or underbrush. Secure
long hair so that it is
above shoulder level.
NEVER wear shorts!
Wear hearing protection devices at all times
while operating the unit.
Always wear eye protection
such as goggles or safety
glasses to shield against thrown
objects.
Keep away from the rotating
sweeper belts or bristles at all
times, and never lift a moving
attachment above waist-high.
Wear appropriate footwear (non-skid
boots or shoes): do not wear open-
toed shoes or sandals. Never work
barefooted!
Keep a proper footing and do not
overreach. Maintain your balance at all
times during operation.
PB02
Be Aware of the Working Environment
Avoid long-term
operation in very hot or
very cold weather.
Be aware and keep
clear of bystanders.
Be extremely careful of
slippery terrain, especially
during rainy weather or
when pulling debris
towards you.
If contact is
made with a
hard object,
stop the
engine and
inspect the
sweepers and
drums for
damage.
Be constantly alert for objects and debris
that could be thrown either from the
sweeper belts or bounced from a hard
surface.
ALWAYS clear your work area of trash or
hidden debris that could be thrown back at
you or toward a bystander. When operating
in rocky terrain or near electric wires or
fences, use extreme caution to avoid
contacting such items with the sweeper
belts.
Figure 1
Figure 2
5
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PB03
Figure 3
Safety Labels
IMPORTANT!
Safety and Operation Information
Labels: Make sure all information
labels are undamaged and readable.
Immediately replace damaged or
missing information labels. New
labels are available from your local
authorized Shindaiwa dealer.
PB2500
This label indicates the minimum
distance between front handle
and rear grip per ANSI B175.3.
POSITION HANDLE
FORWARD OF THIS LINE
READ THE
OPERATOR’S MANUAL.
WEAR HEARING AND ANSI Z87.1
APPROVED EYE PROTECTION.
BEWARE OF THROWN
DIRT AND DEBRIS.
MAINTAIN A
SHALLOW
WORKING
ANGLE…
DO NOT USE ON UNGUARDED
ELEVATED SURFACES.
…AVOID MOVING TOWARD
VERTICAL.
80267Shindaiwa Inc.
6
ENGLISH
Specifications
PB2500 Dry Weight (less sweepers) ............................................................ 4.7 kg/10.4 lb.
PB2500 Dry Weight (Including sweepers) .................................................. 9.5 kg/21.0 lb.
Engine Model ........................................................................................ Shindaiwa SF2500E
Engine Type ..................................................... Shindaiwa C4, vertical-cylinder, air-cooled
Bore x Stroke .................................................................................. 34 x 27 mm/1.3 x 1.1 in.
Displacement ............................................................................................. 24.5 cc/1.5 cu. in.
Maximum Power Output .......................................... 1.1 HP (0.8 kW) @ 7500 rpm (min
-1
)
Fuel/Oil Ratio ........................................ 50:1 with Shindaiwa Premium 2-cycle mixing oil
Fuel Tank Capacity ....................................................................................... 600 ml/20.3 oz.
Carburetor Type ................................................................... Walbro WYL, diaphragm-type
Ignition ............................................................. One-piece electronic, transistor-controlled
Spark Plug ......................................................................................................... NGK CMR6H
Air Cleaner Type ..................................................... Non-reversible flocked filter element
Starting Method ............................................................................................................ Recoil
Stopping Method ................................................................................................. Slide switch
Transmission Type ............................................ Automatic, centrifugal clutch w/worm gear
EPA Emission Compliance Period* ................................................................... Category A
Prior to Assembly
Before assembling, make sure you have
all the components required for a com-
plete unit:
■ Engine assembly
■ Outer tube assembly
■ Drum kit w/gearcase
■ Correct operators handle (see preced-
ing page)
■ Kit containing operator’s handle and
hardware, this manual and tool kit for
routine maintenance. Tool kits vary by
model and may include a hex wrench,
spanner and a combination spark plug
wrench/screwdriver.
Carefully inspect all components for
damage.
IMPORTANT!
The terms “left”, “left-hand”, and “LH”;
“right”, “right-hand”, and “RH”; “front”
and “rear” refer to directions as viewed
by the operator during normal operation.
*Specifications are subject to change without notice.
*The EPA emission compliance period referred to on the emission compliance label located on the engine, indicates the
number of operating hours for which the engine has been shown to meet Federal emission requirements. Category C = 50
hours (Moderate), B = 125 hours (Intermediate) and A = 300 hours (Extended)
PB03
Unit Description
Outer Tube
Grip
Using the accompanying illustrations as a
guide, familiarize yourself with this unit
and its various components. Understand-
ing the product helps ensure top perform-
ance, long service life, and safer opera-
tion. See Figure 4.
WARNING!
Do not make unauthorized modifica-
tions or alterations to this unit or
components.
Gearcase
Throttle
Trigger
Tank
Protector
Figure 4
Ignition
Switch
Spark
Plug
Fuel
Tank
Sweeper
Belt
Sweeper
Drum
Handle
7
ENGLISH
PB2500.08
PB2500.04
PB08
Grip
Spark
Plug
Main
Shaft
Tube
Clamp
Outer Tube
PB2500 PowerBroom
1. Place the powerhead on a clean, flat
surface, spark plug facing up.
See Figure 5.
2. Use the 4mm hex wrench to loosen
the tube clamp screw. Verify that the
D-shaped shim washer is positioned as
shown in Figure 6.
Tube
Clamp
Shim
Washer
CAUTION!
Do not remove the D-shaped shim
washer! The shim washer prevents
damage from overtightening the tube
clamp screw.
Connect the Outer Tube to the
Powerhead
CAUTION!
Do not force the shaft tube into the
powerhead! Excessive force can
damage the shaft tube or mainshaft.
Clamp
Screw
Figure 5
Figure 6
Assembly: Mainshaft/Powerhead
Throttle
Trigger
Ignition
Switch
Hex
Wrench
3. Add some moly-type EP grease to the
splines on the end of the mainshaft.
4. Slide the outer tube into the tube
clamp until the tube bottoms.
5. Position the outer tube so that the
ignition switch is facing up and the
throttle trigger is down.
6. Slide the outer tube into the power-
head until the throttle grip just
contacts the tube clamp.
7. Tighten the clamp screw firmly.
Assembly: Throttle Linkage and Ignition Leads
Connect the Throttle Cable
1. Loosen the air cleaner cover knob and
remove the air cleaner cover.
See Figure 7.
2. Slip the throttle cable into the cable
adjuster and hook the bullet end of the
cable onto the swivel. See Figure 8.
Connect the Ignition Leads
3. Connect the two ignition wires by
pushing the bullet connectors
together. See Figure 9.
4. Reinstall the air cleaner cover.
Connect the throttle
cable
Ignition
Lead
Figure 8
PB2500.05
PB2500.06
Figure 7
Throttle
Cable
Cable
Adjuster
Filter
Cover
Figure 9
Cable Swivel
CAUTION!
Routing of wiring must not interfere
with throttle operation.
8
ENGLISH
PB2500.10
PB10
Assembly: Handle
Handle
Hex Nut
Outer Tube
Adjustment
Knob
Mounting
Screw
Throttle
Assembly
Washer
Connect the Handle to the Outer Tube
Figure 13
PB2500.09
3/16-1/4 inch (4-6 mm)
Throttle Freeplay
Assembly: Adjust Throttle Lever Free Play
1. Loosen the air cleaner cover knob
and remove the air cleaner cover.
See Figure 11.
2. Loosen the lock nut on the cable
adjuster. See Figure 12.
PB2500.05
Cable
Adjuster
Figure 11
Figure 12
The throttle lever free play should be
approxiamtely 3/16-1/4 inch(4-6 mm).
See Figure 10. Make sure that the throttle
lever operates smoothly without binding.
If it becomes necessary to adjust the lever
freeplay, follow the procedures and
illustrations that follow.
Figure 10
3. Turn the cable adjuster in or out as
required to obtain proper free play
3/16-1/4 inch(4-6 mm).
See Figure 12.
4. Tighten the locknut.
Lock
Nut
5. Reinstall the air cleaner cover.
1. Remove both screws from the handle.
2. While spreading the handle at the
mounting hole, position the handle on
the outer tube as shown.
3. Reinstall the two mounting screws in
the handle, but do not tighten them at
this time.
IMPORTANT!
One side of the handle is recessed to
receive the hex nuts.
4. Locate the handle at the best position
for operator comfort (usually about 10
inches ahead of the throttle lever), and
secure it by tightening the knob at the
handle base.
9
ENGLISH
Assembly: Gearcase and Sweeper Assembly
PB17
CAUTION!
The two drum assemblies are
identical, but each drum must be
installed with its recessed end facing
toward the gearcase.
The PB2500 PowerBroom should now be completely assembled.
Install drum axle
onto output shaft
Drum Axle
Cotter Pin
Hitch Pin
Secure the drum axle to
the shaft with the clevis pin
4
Install the sweeper
drum assembly
Drum Assembly
4
Secure
with a
cotter pin
Figure 14
3
2
1. Insert the end of the outer tube into
the gearcase and push until it bottoms.
The outer tube should go into the
gearcase about 1-1/2 in. (38 mm). If
the outer tube stops before bottoming,
rotate it until you feel the inner
mainshaft (driveshaft) splines engage
the gearcase. Then push the outer
tube all the way in. See Figure 14.
2. Rotate the gearcase assembly so that
the index screw aligns with hole in the
outer tube.
3. Use a 4 mm hex wrench to tighten the
gearcase index screw first, then the
gearcase clamp screw.
4. Push one of the drum axles onto either
of the two gearcase output shafts. If
necessary, rotate the drum axle until
the clevis pin hole in the axle aligns
with the matching hole in the gearcase
output shaft.
5. Use a clevis pin and hitch pin to secure
the drum axle to the shaft.
6. Slide the recessed end of a sweeper
drum assembly over the installed axle,
and then push the drum down the axle
until the cotter pin hole in the axle
extends above the drum surface.
1
Install outer tube into
the gearcase
Index Screw
Clamp
Screw
7. Use a cotter pin to secure the drum
assembly on the axle (see inset). The
cotter pin is designed to fit tightly
against the outboard end of the drum,
so you may need to compress the
drum face slightly during installation.
Spread the ends of the cotter pin to
secure.
8. Repeat Steps 4-7 to install the remain-
ing axle and drum assembly.
10
ENGLISH
Mixing Fuel
1. Place the PowerBroom on a flat, level
surface.
2. Clear any dirt or other debris from
around the fuel filler cap.
3. Remove the fuel cap, and fill the tank
with clean, fresh fuel.
4. Reinstall the fuel filler cap and tighten
firmly.
Filling the Fuel Tank
CAUTION!
Some gasolines contain alcohol as an
oxygenate! Oxygenated fuels may
cause increased operating tempera-
tures. Under certain conditions,
alcohol-based fuels may also reduce
the lubricating qualities of some
mixing oils. Never use any fuel
containing more than 10% alcohol by
volume!
Generic oils and some outboard
motor oils may not be intended for
use in high-performance air cooled 2-
cycle engines, and should never be
used in your Shindaiwa engine!
CAUTION!
This engine is designed to operate on
a 50:1 mixture consisting of unleaded
gasoline and a premium 2-cycle
mixing oil only. Use of non-approved
mixing oils can lead to excessive
maintenance costs and/or engine
damage.
■ Use only fresh, clean unleaded
gasoline with a pump octane rating of
87 or higher.
■ Mix gasoline with 50:1 Shindaiwa
Premium 2-cycle mixing oil or with an
equivalent high quality 2-cycle mixing
oil.
Example of 50:1 mixing quantites:
■ 1 gallon of gasoline to 2.6 oz. mixing
oil.
■ 5 liters of gasoline to 100 ml. mixing
oil.
IMPORTANT!
Mix only enough fuel for your immediate
needs! If fuel must be stored longer than
30 days and Shindaiwa One oil with fuel
stabilizer is not used, it should first be
treated with a fuel stabilizer such as
StaBil™.
WARNING!
Minimize the risk of fire!
■ STOP the engine before refueling.
■ ALWAYS allow the unit to cool
before refueling!
■ Wipe all spilled fuel and move the
unit at least 10 feet (3 meters) from
the fueling point before restarting!
■ NEVER start or operate this unit if
there is a fuel leak.
■ NEVER start or operate this unit if
the carburetor, fuel lines, fuel tank
and/or fuel tank cap are damaged.
■ NEVER smoke or light any fires
near the unit or fuels!
■ NEVER place any flammable
material near the engine muffler!
■ NEVER operate the engine without
the muffler and spark arrester in
place and properly
functioning!
WARNING!
BURN DANGER! The gearcase will
become very hot during normal
operation.
The PowerBroom works best when its
rubber fins can quickly slide or “skim”
over the surface being swept.
New or replacement sweeper belts
tend to grip or drag on hard surfaces, and
should be thoroughly broken in or
“scuffed” before the broom is actually put
to work.
Break-in is easily accomplished by
operating the PowerBroom at full throttle
for 3 to 5 minutes in loose gravel or
similar abrasive material. Once broken in,
a PowerBroom will effortlessly move an
amazing variety of materials, ranging
from snow or standing water to heavier
objects such as gravel or wood chips.
Experience will help you understand
the operating principles of the
PowerBroom, but safe operation must be
practiced from the start.
Break-in and Operation
11
ENGLISH
PB2500.11
Starting the Engine
1. Slide the ignition switch to the “I”
position (engine ON).
2. Press the primer bulb until fuel can be
seen flowing in the transparent return
tube.
Primer Bulb
Return
Tube
IMPORTANT!
Engine ignition is controlled by a two
position switch mounted on the throttle
housing labeled, "I" for ON or START
and "O" for OFF or STOP.
Figure 15
Figure 16
IMPORTANT!
The primer system only pushes fuel
through the carburetor. Repeatedly
pressing the primer bulb will not flood
the engine with fuel.
PB18
PB2500.13
PB2500.1
2
3. Set the choke lever to the CLOSED
position if engine is cold.
Make sure the
sweeper belts
are clear of
obstructions!
Figure 17
Closed
ON
4. While holding the outer tube firmly
with left hand. Use your other hand to
slowly pull the recoil starter handle
until resistance is felt, then pull
quickly to start the engine.
Figure 18
CAUTION!
Do not pull the recoil starter to the
end of the rope travel. Pulling the
recoil starter to the end of the rope
travel can damage the starter.
Idle the engine briefly before stopping
(about 2 minutes), then slide the ignition
switch to the “O” (Engine OFF) position.
Stopping the Engine
Figure 20
WARNING!
Never start the engine from the
operating position.
WARNING!
The sweeper belts may rotate when
the engine is started!
When the Engine Starts...
■ After the engine starts, allow the
engine to warm up at idle 2 or 3
minutes before operating the unit.
■ After the engine is warm, pick
up the unit and clip on the shoulder
strap if so equipped. See page 16.
■ Advancing the throttle makes the
sweeper belts turn faster; releasing the
throttle permits the attachment to stop
turning. If the sweeper belts continue
to rotate when the engine returns to
idle, carburetor idle speed should be
adjusted (see the next page).
IMPORTANT!
If the engine fails to start after several
attempts with the choke in the closed
position, the engine may be flooded with
fuel. If flooding is suspected, move the
choke lever to the open position and
repeatedly pull the recoil starter to
remove excess fuel and start the engine.
If the engine still fails to start, refer to the
troubleshooting section of this manual
(Starting a flooded engine).
5. When the engine starts, slowly move
the choke lever to the "OPEN"
position. See Figure 19. (If the engine
stops after the initial start, close the
choke and restart.)
Figure 19
Open
PB2500.14
PB19
12
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PB22
Operating Techniques
Operate the PowerBroom at or near full
throttle with its sweeper fins resting on
the work surface.
IMPORTANT!
It is both tiring and unnecessary to lift or
hold the fins from the work surface
during sweeping.
When sweeping narrow areas such as
sidewalks, the PowerBroom can be used
to throw material directly ahead of the
operator. Clearing wider areas may
require sweeping at an angle to create
windrows to one side of the path being
cleared.
Windrows of lighter materials often
can be combined into one main row or
pile for eventual pickup, while heavy or
bulky material may need to be collected
row-by-row. See Figure 22.
DIRECTION OF
ROTATION
Sweeping corners
with the
PowerBroom
upside down
Sweeping Windrows
Adjustment
Knob
WARNING!
Reversing the PowerBroom will cause
debris to be thrown back toward the
operator. When reversing the
PowerBroom, use lower throttle
settings and be aware that thrown
debris may also affect your footing!
…loosen the
adjustment knob to
reverse the handle.
For long-term inverted
operation…
Figure 22
Figure 23
Figure 24
To pull debris from corners, reverse
sweeper drum rotation by turning the
powerhead over (throttle facing “up”).
See Figures 23 and 24.
Adjusting Engine Idle
PB2500.16
Figure 21
Idle Adjusting
Screw
The engine must return to idle speed
whenever the throttle lever is released.
Idle speed is adjustable, and must be set
low enough to permit the engine clutch
to disengage the cutting attachment.
Idle Speed Adjustment
WARNING!
The cutting attachment must NEVER
rotate at engine idle! If the idle speed
cannot be adjusted by the procedure
described here, return the trimmer to
your Shindaiwa dealer for inspection.
1. Place the trimmer on the ground, then
start the engine, and then allow it to
idle 2-3 minutes until warm.
2. If the attachment rotates when the
engine is at idle, reduce the idle speed
by turning the idle adjustment screw
counter-clockwise.
See Figure 21.
3. If a tachometer is available, the engine
idle speed should be final adjusted to
3,200 (±300) rpm (min
-1
).
NOTE:
Carburetor fuel mixture adjustments are
preset at factory and cannot be serviced
in the field.
13
ENGLISH
IMPORTANT!
MAINTENANCE, REPLACEMENT OR
REPAIR OF EMISSION CONTROL
DEVICES AND SYSTEMS MAY BE
PERFORMED BY ANY REPAIR ESTAB-
LISHMENT OR INDIVIDUAL; HOW-
EVER, WARRANTY REPAIRS MUST BE
PERFORMED BY A DEALER OR
SERVICE CENTER AUTHORIZED BY
SHINDAIWA KOGYO CO., LTD. THE
USE OF PARTS THAT ARE NOT
EQUIVALENT IN PERFORMANCE AND
DURABILITY TO AUTHORIZED PARTS
MAY IMPAIR THE EFFECTIVENESS
OF THE EMISSION CONTROL SYSTEM
AND MAY HAVE A BEARING ON THE
OUTCOME OF A WARRANTY CLAIM.
Muffler
This unit must never be operated with a
faulty or missing spark arrester or muffler.
Make sure the muffler is well secured and
in good condition. A worn or damaged
muffler is a fire hazard and may also cause
hearing loss.
Spark Plug
Keep the spark plug and wire connec-
tions tight and clean.
Fasteners
Make sure nuts, bolts, and screws
(except carburetor adjusting screws) are
tight.
Prior to each work day, perform the
following:
■ Remove all dirt and debris from the
engine, check the cooling fins and air
cleaner for clogging, and clean as
necessary.
■ Carefully remove any accumulations of
dirt or debris from the muffler and fuel
tank. Dirt build-up in these areas can
lead to engine overheating, fire, or
premature wear.
General Maintenance
WARNING!
Before performing any maintenance,
repair or cleaning work on the unit,
make sure the engine and sweeper
belts are completely stopped. Discon-
nect the spark plug wire before
performing service or maintnenance
work.
WARNING!
Non-standard parts may not operate
properly with your unit and may
cause damage and lead to personal
injury.
Daily Maintenance
■ Check for loose or missing screws or
components. Make sure the sweeper
drums are securely fastened.
■ Check the entire unit for leaking fuel
or grease.
10-Hour Maintenance
PB2500.17
Unscrew
Fastener
Remove and clean
or replace
the element
Every 10 hours of operation (more
frequently in dusty or dirty conditions):
Remove the air cleaner element.
See Figure 25. Clean or replace as
necessary. To clean element: wash it
thoroughly in soap and water. Let it
dry before reinstalling the element.
CAUTION!
Do not operate the unit if the air
cleaner or element is damaged, or if
the element is wet.
Figure 25
14
ENGLISH
50-hour Maintenance
Every 50 hours of operation
(more frequently in dusty or dirty condi-
tions):
■ Remove and clean the cylinder cover
and clean grass and dirt from the
cylinder fins.
■ Use a hooked wire to extract the fuel
filter from inside the fuel tank. Remove
and replace the filter element. Before
reinstalling the filter, inspect the
condition of the fuel line. If damage or
deterioration are noted, the unit should
be removed from service until it can be
inspected by a Shindaiwa-trained
service technician. See Figure 27.
CAUTION!
Make sure you do not pierce the fuel
line with the end of the hooked wire,
the line is delicate and can be
damaged easily.
PB2500.19
Filter Element
Hooked
Wire
Figure 27
PB23
PB2500.18
Every 10 to 15 hours of operation:
Remove and clean the spark plug. Adjust
the spark plug electrode gap to 0.024 -
0.028 inch (0.6 - 0.7 mm). If the spark plug
must be replaced, use only an NGK
CMR6H or equivalent resistor type spark
plug of the correct heat range.
See Figure 26.
CAUTION!
Before removing the spark plug,
clean the area around the plug to
prevent dirt and debris from getting
into the engine’s internal parts.
Clean the spark plug
and check the gap
at the electrode.
10/15-Hour Maintenance
0.024–0.028 inch
(0.6–0.7 mm)
Figure 26
NOTE:
The NGK CMR6H also meets the
requirements for electromagnetic
compliance (EMC).
135-hour or Annual Maintenance.
■ The valve clearance should be ad-
justed annually or every 135 hours. It
is highly recommended that this is
done by a Shindaiwa-trained service
technician.
■ Replace the spark plug annually: Use
only NGK CMR6H or equivalent
resistor type spark plug of the
correct heat range. Set spark plug
electrode gap to 0.024-0.028 inch
(0.6 -0.7 mm).
NOTE:
The NGK CMR6H also meets the
requirements for electromagnetic
compliance (EMC).
15
ENGLISH
PB2500.20
Spark Arrester Screen Maintenance.
If the engine becomes sluggish and low
on power, check and clean the spark
arrester screen.
WARNING!
Never operate the unit with a dam-
aged or missing muffler or spark
arrester! Operating with a missing or
damaged spark arrester is a fire
hazard and could also damage your
hearing.
1. With a 3 mm hex wrench remove the
4 engine cover screws and the engine
cover. See Figure 28.
2. With a 4 mm hex wrench remove the
3 muffler bolts and the muffler.
See Figure 28.
3. With a small flat bladed screwdriver
remove the 2 screws holding the
spark arrester screen and cover to
the muffler. See Figure 28.
IMPORTANT!
If you note excessive carbon buildup,
consult with an authorized Shindaiwa
servicing dealer.
4. Remove the screen and clean it with a
stiff bristle brush.
5. Inspect the cylinder exhaust port for
any carbon buildup.
6. Reassemble the spark arrester, muffler
and engine cover in the reverse order
of disassembly.
Figure 28
Muffler
Bolts
Spark Arrester
Screen
Cover
Cover Screws
Muffler
Gasket
Engine Cover
Screws
Muffler
Spark Arrester
Cover
PB2500.21
PB2500.22
Replacing the gearcase oil
WARNING!
BURN DANGER! The gearcase will
be extremely hot after use!
300-hour Maintenance
Gearcase Lubrication
The gearcase should be filled with 60 cc
(2.0 fl.oz.) of Mobil SHC634 Synthetic
Gear Oil. A maximum of 75-80 cc can be
used, but never to exceed 80 cc. Opera-
tion with excessive oil level will result in
high operating temperatures. Do not
overfill!
Figure 29
Fill to
this level
correct oil depth is 5/8" (15.5 mm).
See Figure 30. DO NOT OVERFILL!
6. Inspect the sideplate for damage and
clean off all remaining liquid gasket
material with brake cleaner or acetone.
Coat the outer sealing flange of the
sideplate with Loctite Ultragrey Silicon
Sealant or Threebond No. 1104
Liquid Gasket.
7. Replace the cover and install the four
sideplate screws. Tighten securely.
8. Reinstall the drum and axle assembly
per the sweeper assembly instructions.
See page 9.
Figure 30
1. Disconnect spark plug wire at engine.
2. Remove the LH Drum and axle
assembly (as viewed from the operat-
ing position). Wipe the sideplate clean
and remove four screws (it is not
necessary to remove the gearcase
from the outer tube).
3. Turn gearcase side plate to break the
seal and lift the plate from the gear-
case. See Figure 29.
NOTE:
It may be necessary to use a heat gun to
soften the sealer material.
4. Turn the gearcase to the LH side and
allow all used gearcase oil to drain into
a small container and properly dispose
of as in accordance with your local
regulations.
5. Place the gearcase on the RH side and
supported so the outer tube is parallel
to the ground. Refill the gearcase with
60 cc (2.0 fl.oz) of Mobil SHC634
Synthetic Gear Oil to the bottom of the
chamfer on the output gear. The
WARNING!
BURN DANGER! The engine will
become very hot during normal
operation. Let engine cool before
servicing.
16
ENGLISH
CAUTION!
Gasoline stored in the carburetor for
extended periods can cause hard
starting, and could also lead to
increased service and maintenance
costs.
Long Term Storage
Whenever the unit will not be used for 30
days or longer, use the following proce-
dures to prepare it for storage:
■ Clean external parts thoroughly.
■ Drain all the fuel from the carburetor
and the fuel tank.
IMPORTANT!
All stored fuels should be stabilized with
a fuel stabilizer such as
STA-BIL姞.
Remove remaining fuel from the fuel lines
and carburetor with the fuel drained from
the fuel tank.
1. Prime the primer bulb until no more
fuel is passing through.
2. Start and run the engine until it stops
running.
3. Repeat steps 1 and 2 until the engine
will no longer start.
■ Remove the spark plug and pour
about 1/4 ounce of 2-cycle mixing oil
into the cylinder through the spark
plug hole. Slowly pull the recoil starter
2 or 3 times so oil will evenly coat the
interior of the engine. Reinstall the
spark plug.
■ Before storing the unit, repair or
replace any worn or damaged parts.
■ Remove the air cleaner element from
the carburetor and clean it thoroughly
with soap and water, let dry and
reassemble the element.
■ Store the unit in a clean, dust-free area.
p/n 22410-17201 and 60840-98020
(optional)
Although a strap and hanger is not
required for use with a Shindaiwa
PB2500 PowerBroom, it is recom-
mended to reduce operator fatigue
during extended periods of operation.
Make sure all hooks and adjusting
devices are secure. Adjust the harness
shoulder strap so the shoulder pad
rests comfortably on the off-side
shoulder. See Figure 31.
Recommended
Strap and
Hanger
p/n 99909-33021 (optional)
PB25
A plastic debris shield is available from
your Shindaiwa dealer as a useful option
to your PowerBroom. The shield helps
prevent broadcasting debris when large
volumes of material are forced over the
top of the drum during operation.
See Figure 32.
Figure 31
Figure 32
Strap and Hanger Debris Shield
17
ENGLISH
Troubleshooting Guide
ENGINE DOES NOT START
Does the engine crank?
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
NO
Good compression?
Loose spark plug.
Excess wear on cylinder, piston, rings.
Valves not seating.
Tighten and re-test.
NO
YES
Does the tank contain
fresh fuel of the proper
grade?
Refill with fresh, clean unleaded gasoline with
a pump octane of 87 or higher mixed with
a 2-cycle air cooled mixing oil that meets or
exceeds ISO-L-EGD and/or JASO FC classified
oils at 50:1 gasoline/oil ratio.
Fuel incorrect, stale or contaminated;
mixture incorrect.
NO
YES
Is fuel visible and moving
in the return line when
priming?
Check for clogged fuel filter and/or vent.
Priming pump not functioning properly.
Replace fuel filter or vent as required; restart.
Consult with an authorized servicing dealer.
NO
Is there spark at the spark
plug wire terminal?
The ignition switch is in “O” (OFF)
position.
Shorted ignition circuit.
Faulty ignition unit.
Move switch to “I” (ON) position and restart.
NO
YES
YES
Check the spark plug.
If the plug is wet, excess fuel may be in
the cylinder.
The plug is fouled or improperly gapped.
The plug is damaged internally or of the
wrong size.
Crank the engine with the plug removed,
reinstall the plug, and restart.
Clean and regap the plug to 0.024 - 0.028
inch (0.6 - 0.7 mm). Restart.
Replace the plug with an NGK CMR6H or
equivalent resistor type spark plug of the
correct heat range. Set spark plug electrode
gap to 0.024-0.028 inch (0.6-0.7 mm).
YES
What To Check Possible Cause Remedy
LOW POWER OUTPUT
Is the engine overheating?
Operator is overworking the unit.
Carburetor mixture is too lean.
Improper fuel ratio.
Fan, fan cover, cylinder fins dirty
or damaged.
Carbon deposits on the piston or in
the muffler.
Apply less presure on the sweeper drums.
Consult with an authorized servicing dealer.
Refill with fresh, clean unleaded gasoline with a pump
octane of 87 or higher mixed with a 2-cycle air cooled
mixing oil that meets or exceeds ISO-L-EGD and/or
JASO FC classified oils at 50:1 gasoline/oil ratio.
Clean, repair or replace as necessary.
Consult with an authorized servicing dealer.
What To Check Possible Cause
Remedy
Engine is rough at all
speeds. May also have
black smoke and/or
unburned fuel at the
exhaust.
Clogged air cleaner element.
Loose or damaged spark plug.
Air leakage or clogged fuel line.
Water in the fuel.
Piston seizure.
Faulty carburetor and/or diaphragm.
Valve clearance set incorrectly.
Service the air cleaner element.
Tighten or replace.
Repair or replace filter and/or fuel line.
Replace the fuel. See page 10.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Engine is knocking.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion
chamber.
Valve clearance set incorrectly.
See above.
Check fuel octane rating; check for presence of
alcohol in the fuel (pg. 10). Refuel as necessary.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
18
ENGLISH
Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS
Poor acceleration.
Clogged air filter.
Clogged fuel filter.
Lean fuel/air mixture.
Idle speed set too low.
Clogged spark arrester.
Clean the air filter.
Replace the fuel filter.
Consult with an authorized servicing dealer.
Adjust: 3,200 (Ⳳ300) rpm (min
-1
).
Clean spark arrester. (Pg. 15).
Symptom Possible Cause
Remedy
Engine stops abruptly.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose terminal.
Ignition failure.
Piston seizure.
Reset the switch and restart.
Refuel. See page 10.
Replace fuel filter.
Drain; replace with clean fuel. See page 10.
Clean and replace spark plug, tighten
the terminal.
Replace the ignition unit.
Consult with an authorized servicing dealer.
Engine difficult to shut off.
Ground (stop) wire is disconnected or
switch is defective.
Overheating due to incorrect spark plug.
Overheated engine.
Test and replace as required.
Idle engine until cool.
Clean and regap the plug to 0.024 - 0.028
inch (0.6 - 0.7 mm). Correct plug: NGK CMR6H
or equivalent resistor type spark plug of the
correct range.
Idle engine until cool.
Sweeping attachment
rotates at engine idle.
Engine idle too high.
Broken clutch spring or worn clutch
spring boss.
Loose attachment holder.
Set idle: 3,200 (Ⳳ300) rpm (min
-1
)
Replace spring/shoes as required, check
idle speed.
Inspect and re-tighten holders securely.
Engine will not idle down.
Engine idle set too high.
Engine has an air leak.
Set idle: 3,200 (Ⳳ300) rpm (min
-1
)
Consult with an authorized servicing dealer.
Top of engine is getting
dirty and oily.
Valve cover is leaking.
Consult with an authorized servicing dealer.
ADDITIONAL PROBLEMS
Symptom Possible Cause Remedy
Excessive vibration.
Warped or damaged sweeper attachment.
Loose gearcase.
Bent main shaft/worn or damaged
bushings.
Inspect and replace attachment as required.
Tighten gearcase securely.
Inspect and replace as necessary.
Sweeper belts will
not rotate.
Shaft not installed in powerhead or
gearcase.
Broken shaft.
Damaged gearcase.
Inspect and reinstall as required.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
19
ENGLISH
Your Warranty Rights and
Obligations
The California Air Resources Board, the U.S. Environmental
Protection Agency and Shindaiwa Kogyo Co., Ltd. are pleased to
explain the emission control system warranty on your new small
off-road (non-road) engine.
In California, new small off-road engines must be designed,
built, and equipped to meet the State’s stringent anti-smog
standards. In other states, new 1997 and later non-road engines
must meet the Federal EPA’s stringent anti-smog standards.
Shindaiwa Kogyo Co., Ltd. must warrant the emission control
system on your small off-road engine for the periods of time
listed below, provided there has been no abuse, neglect, or
improper maintenance of your small off-road engine.
Your engine emission control system includes parts such as
the carburetor, the ignition system and, if equipped, the
catalytic converter. These components are specifically listed
below.
Where a warrantable condition exists, Shindaiwa Kogyo Co.,
Ltd. will repair your small off-road engine at no cost to you
including diagnosis, parts, and labor.
Manufacturer’s Warranty
Coverage
When sold within the U.S., this engine’s emission control
system is warranted for a period of two (2) years from the date
this product is first delivered to the original retail purchaser.
During the warranty period, Shindaiwa Kogyo Co., Ltd. will,
at their option, repair or replace any defective emission-related
component on this engine. During the original Warranty Period,
these Warranty Rights are automatically transferable to subse-
quent owners of this product.
What is Covered by this
Warranty
1. Carburetor Internal Components
■ Throttle Valve, Needle, Jet, Metering Diaphragm
2. Ignition System Components
■ Ignition Coil
■ Flywheel Rotor
3. Catalytic Converter (if originally equipped)
The emission control system for your particular Shindaiwa
engine may also include certain related hoses
and connectors.
Emission System Warranty Statement
Owners Warranty
Responsibilities
As the small off-road engine owner, you are responsible for
the performance of the required maintenance listed in this
owners manual. Shindaiwa Kogyo Co., Ltd. recommends that
you retain all receipts covering maintenance on your small off-
road engine, but Shindaiwa Kogyo Co., Ltd. cannot deny
warranty solely for the lack of receipts or for your failure to
ensure the performance of all scheduled maintenance.
As the small off-road engine owner, you should be aware,
however, that Shindaiwa Kogyo Co., Ltd. may deny you war-
ranty coverage if your small off-road engine or a part has failed
due to abuse, neglect, improper maintenance, or unapproved
modifications.
You are responsible for presenting your small off-road
engine to an authorized Shindaiwa Dealer as soon as a problem
exists. The warranty repairs should be completed in a reason-
able amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and
responsibilities, you should contact a Shindaiwa customer
service representative at (503) 692-3070 or your local Shindaiwa
Dealer.
Consequential Damages
In the event that other component parts of this product are
damaged by the failure of a warranted part, Shindaiwa Kogyo
Co., Ltd. will repair or replace such component parts at no
charge to you.
What is Not Covered
■ Failures caused by abuse, neglect, or improper
maintenance procedures.
■ Failures caused by the use of modified or non-approved parts
or attachments.
This Warranty is Administered by:
Shindaiwa Inc.
11975 S.W. Herman Rd.
Tualatin, OR 97062
(503) 692-3070
Shindaiwa Inc.
11975 S.W. Herman Rd.
Tualatin, Oregon 97062
Telephone: 503 692-3070
Fax: 503 692-6696
www.shindaiwa.com
Shindaiwa Kogyo Co., Ltd.
Head Office: 6-2-11 Ozuka
Nishi, Asaminami-ku
Hiroshima, 731-3167, Japan
Telephone: 81-82-849-2220
Fax: 81-82-849-2481
䊚2003 Shindaiwa, Inc.
Part Number 80732
Revision 4/03
Printed in Japan
Shindaiwa Tornado is a trademark,
and Shindaiwa is a registered trademark
of Shindaiwa, Inc.
NOTES:
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